Health question.. rotator cuff?

I have pain at times in my left shoulder (left handed) that has been diagnosed in the past as an impingement. I had a cortisone shot in the area several years ago and it did nothing. I can still throw a baseball (I'm 63) and still do most anything I want so I don't worry too much about it. There are times it barks at me when I'm under a car doing something, but that's about it. My son and I were talking the other day and my arm may be in better than his, but he pitched in college and has had a torn labrum and slightly torn rotator cuff fixed in his throwing shoulder. Now his elbow is wonky.